Is there lead in Great Falls's tap water?
12PPBparts per billion of lead in Great Falls's water at the latest test, from January to June 2026
Just under the legal limit of 15 ppb
Just under the legal limit of 15 ppb
22 public water companies list Great Falls as a place they supply. The biggest is Great Falls's water department, with about 60,000 people. The highest latest result among Great Falls's water companies is 12 parts per billion, at Great Falls's water department. None of the 15 with results was above 15 at its latest test. 8 found too little lead to measure. Small ones like High Plains H2o LLC supply just their own grounds or street; most of Great Falls gets its water from Great Falls's water department. 7 have no lead test results on file. 17 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well. Your water bill names yours.
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